{"product_id":"bluetooth-5-stereo-amplifier-board-5w-2-audio-decoder-module","title":"Bluetooth 5.0 Mini Stereo Amplifier Board – 5W×2 Audio Module","description":"\n\u003ch2\u003eBluetooth 5.0 Mini Stereo Power Amplifier Board – 5W×2 Audio Decoder Module\u003c\/h2\u003e\n\u003cp\u003eBuild your own wireless speaker system with this compact \u003cstrong\u003eBluetooth 5.0 stereo amplifier board\u003c\/strong\u003e. Delivering up to \u003cstrong\u003e10W total output (5W × 2 channels)\u003c\/strong\u003e, this mini PCB module is ideal for DIY audio projects, speaker builds, and portable sound system modifications. Pair it effortlessly with any Bluetooth-enabled smartphone or device and enjoy clean, stable stereo audio output.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBluetooth 5.0\u003c\/strong\u003e — fast, stable wireless pairing with virtually any smartphone, tablet, or audio source (Device ID: YMX-868BT)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDual-channel stereo output\u003c\/strong\u003e — 5W × 2 for full-range stereo sound\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompact PCB\u003c\/strong\u003e — 40mm × 34mm × 9mm (including connectors), perfect for space-constrained builds\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlexible power input\u003c\/strong\u003e — DC 3.7V–5V (USB or lithium battery); supports 1.5A–2A supply current\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMicro-wave power switch control\u003c\/strong\u003e for convenient on\/off operation\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eExternal amplifier output\u003c\/strong\u003e — 3P socket OUT audio output for optional external power amplifier modification (middle = audio ground; L and R on each side)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUSB charging input\u003c\/strong\u003e — charge your lithium battery directly via USB; red indicator light shows charging status\u003c\/li\u003e\n  \u003cli\u003ePackage includes: \u003cstrong\u003e1× amplifier board + 4× connection cables\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable style=\"width:100%; border-collapse:collapse;\"\u003e\n  \u003ctr style=\"background:#f4f4f4;\"\u003e\n\u003ctd style=\"padding:6px 10px;\"\u003e\u003cstrong\u003eBluetooth Version\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:6px 10px;\"\u003e5.0 (Device ID: YMX-868BT)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd style=\"padding:6px 10px;\"\u003e\u003cstrong\u003eOutput Power\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:6px 10px;\"\u003e5W × 2 (10W max)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr style=\"background:#f4f4f4;\"\u003e\n\u003ctd style=\"padding:6px 10px;\"\u003e\u003cstrong\u003eOperating Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:6px 10px;\"\u003eDC 3.7V – 5V (do NOT exceed 5V)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd style=\"padding:6px 10px;\"\u003e\u003cstrong\u003eRecommended Current\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:6px 10px;\"\u003e1.5A – 2A (minimum)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr style=\"background:#f4f4f4;\"\u003e\n\u003ctd style=\"padding:6px 10px;\"\u003e\u003cstrong\u003eSpeaker Impedance\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:6px 10px;\"\u003e4Ω recommended (3W×2 at 3.7V \/ 5W×2 at 5V)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd style=\"padding:6px 10px;\"\u003e\u003cstrong\u003ePCB Dimensions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:6px 10px;\"\u003e40mm × 34mm × 9mm\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr style=\"background:#f4f4f4;\"\u003e\n\u003ctd style=\"padding:6px 10px;\"\u003e\u003cstrong\u003eAudio Output\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:6px 10px;\"\u003e3P OUT port (L \/ GND \/ R)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd style=\"padding:6px 10px;\"\u003e\u003cstrong\u003ePairing Password (non-Android)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:6px 10px;\"\u003e0000\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr style=\"background:#f4f4f4;\"\u003e\n\u003ctd style=\"padding:6px 10px;\"\u003e\u003cstrong\u003eCountry of Origin\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:6px 10px;\"\u003eMade in China\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eWiring Guide\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBAT (Red 2P seat):\u003c\/strong\u003e DC 3.7V–5V positive to +, GND to negative\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSpeaker 1 (White 2P seat):\u003c\/strong\u003e L-O- \/ L-O+ (left channel)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSpeaker 2 (White 2P seat):\u003c\/strong\u003e R-O- \/ R-O+ (right channel)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNote:\u003c\/strong\u003e If using a 3.7V lithium battery, remove the IN4007 diode to prevent a ~0.7V voltage drop that may affect USB\/card reading\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVoltage must NOT exceed 5V\u003c\/strong\u003e — higher voltage will damage the main chip, power amplifier IC, and related components\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eBluetooth Pairing Instructions\u003c\/h3\u003e\n\u003col\u003e\n  \u003cli\u003ePower on the module — it will automatically enter Bluetooth discovery mode\u003c\/li\u003e\n  \u003cli\u003eOn your smartphone, open \u003cstrong\u003eSettings → Bluetooth\u003c\/strong\u003e and scan for devices\u003c\/li\u003e\n  \u003cli\u003eSelect \u003cstrong\u003eYMX-868BT\u003c\/strong\u003e from the list\u003c\/li\u003e\n  \u003cli\u003eNon-Android devices: enter password \u003cstrong\u003e0000\u003c\/strong\u003e when prompted\u003c\/li\u003e\n  \u003cli\u003eA \"Connected successfully\" prompt confirms pairing is complete\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch3\u003eRelated Products You May Like\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/10-piece-complete-gardening-tool-kit\"\u003e10-Piece Complete Gardening Tool Kit\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/hex-nut-bolt-extractor-tool-kit-10-piece\"\u003e10-Pc Hex Nut \u0026amp; Bolt Extractor Kit\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/1-2-inch-8-piece-hex-short-socket-set-vanadium-steel\"\u003e1\/2\" Drive 8-Piece Hex Short Socket Set – Vanadium Steel\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eLearn more: \u003ca href=\"https:\/\/www.osha.gov\/hand-power-tools\" target=\"_blank\" rel=\"noopener\"\u003eOSHA guidance on hand and power tools\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: What power supply should I use with the Bluetooth 5.0 amplifier board?\u003c\/h4\u003e\n\u003cp\u003eA: Use a quality DC power supply or lithium battery providing 3.7V–5V at a minimum of 1.5A–2A. Do not exceed 5V, as this can permanently damage the amplifier IC and main chip. For two speakers running at full output (5W×2), ensure your source can deliver at least 2A continuously. Avoid low-quality adapters — unstable current causes audio distortion or module restarts.\u003c\/p\u003e\n\u003ch4\u003eQ: What speaker impedance is compatible with this amplifier board?\u003c\/h4\u003e\n\u003cp\u003eA: The board is designed for 4Ω speakers. When powered by a 3.7V lithium battery, use 4Ω \/ 3W×2 speakers. When powered by a regulated 5V supply, use 4Ω \/ 5W×2 full-range speakers for optimal stereo performance.\u003c\/p\u003e\n\u003ch4\u003eQ: Can I use this board to drive an external power amplifier?\u003c\/h4\u003e\n\u003cp\u003eA: Yes. The 3P block labeled OUT provides a dedicated audio output: the middle pin is audio ground, and the left\/right pins carry the L and R channels respectively. Simply connect these to your external amplifier's input instead of (or in addition to) the onboard speaker outputs.\u003c\/p\u003e\n\u003ch4\u003eQ: Why is the Bluetooth connection unstable or the module restarting?\u003c\/h4\u003e\n\u003cp\u003eA: This almost always indicates insufficient supply current. Check that your power source reliably delivers 1.5A–2A. If using a lithium battery at 3.7V, confirm it can sustain the required discharge current — some cells have adequate voltage but insufficient current capacity, leading to connectivity instability or audio dropouts.\u003c\/p\u003e\n\u003c!-- production-packaging-notice --\u003e\n\u003ch3\u003eProduction \u0026amp; Packaging Notice\u003c\/h3\u003e\n\u003cp\u003eTo maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What power supply should I use with the Bluetooth 5.0 amplifier board?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Use a quality DC power supply or lithium battery providing 3.7V–5V at a minimum of 1.5A–2A. Do not exceed 5V, as this can permanently damage the amplifier IC and main chip. For two speakers running at full output (5W×2), ensure your source can deliver at least 2A continuously. 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